chore(deps): update oxsecurity/megalinter action to v9

.gitea/workflows/sec-megalinter.yml

@@ -53,7 +53,7 @@ jobs:
         id: ml
         # You can override MegaLinter flavor used to have faster performances
         # More info at https://megalinter.io/flavors/
-        uses: oxsecurity/megalinter@v7
+        uses: oxsecurity/megalinter@v9
         env:
           # All available variables are described in documentation
           # https://megalinter.io/configuration/